Your organization maintains a table of 2 million patient records (medical record number, patient name, date of birth) in a SQL database. You must create an exact data match (EDM) sensitive information type so DLP policies can detect only these specific records, not any values that merely resemble the pattern. After defining the schema in the Purview portal, what must you do to make the actual record values available for matching while ensuring the raw sensitive data never leaves your environment in clear text?